▪ Connection diagrams ▪ Dimensional drawings ▪ Order confirmation 1.3 Safekeeping Keep this technical file and all supporting documents ready at hand and ac- cessible for future use at all times. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE Indicates measures to be taken to prevent damage to property. Table 1: Signal words in warning notices ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
In this technical file it is laid out as follows: Important information. 1.4.3 Instruction system This technical file contains single-step and multi-step instructions. Single-step instructions Instructions which consist of only a single process step are structured as fol- lows: ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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Instructions which consist of several process steps are structured as follows: Aim of action ü Requirements (optional). 1. Step 1. ð Result of step (optional). 2. Step 2. ð Result of step (optional). ð Result of action (optional). ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
Permitted electrical operating conditions In addition to the design data in accordance with the order confirmation, ob- serve the following limits for the through-current and the step voltage: ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
▪ Wear appropriate personal protective equipment such as a helmet, work gloves, etc. for the respective activity. ▪ Never wear damaged personal protective equipment. ▪ Never wear rings, necklaces, or other jewelry. ▪ If you have long hair, wear a hairnet. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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▪ For the on-load tap-changer oil compartment, use insulating fluids that meet the requirements in accordance with IEC 60296. ▪ If approved by the transformer manufacturer, you can use synthetic esters in accordance with IEC 61099. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
2 Safety ▪ It is imperative that you consult with Maschinenfabrik Reinhausen GmbH because specific operating conditions apply to alternative insulating fluids. ▪ Only use conductive and grounded hoses, pipes, and pump equipment that are approved for flammable liquids. ▪ Only use lubricants and auxiliary materials approved by the manufacturer.
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Protection level "ob": Equipment protection level (EPL) "Gb" for zone 1 and zone 2 Protection level "oc": Equipment protection level (EPL) "Gc" for zone 2 Pressurized apparatus Powder filling Ignition protection type "n" Table 6: Ignition protection types ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
2.5 Measures for ensuring compliance with explosion protection requirements 2.5.1 Measures taken by the manufacturer Maschinenfabrik Reinhausen has taken the following measures for ensuring compliance with explosion protection requirements. You do not need to take any special measures in this regard.
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The oil conservator of the on-load tap-changer ensures that sufficient insu- lating oil is present in the on-load tap-changer oil system at all times during operation. Therefore, operate the on-load tap-changer only with a oil conservator that fulfills the following requirements: ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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Section 5.1.6 and 5.1.7 in the on-load tap-changer standard IEC 60214. Therefore, check the quality and dielectric strength of the insulating oil in the transformer tank on a regular basis and comply with the service intervals for the oil change. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
2. Design screws, washers, nuts etc. in A4 in accordance with ISO 3506-1/ ISO 3506-2 standard. 3. If the painted surfaces are damaged, note repair instructions. These can be requested from Maschinenfabrik Reinhausen GmbH's Technical Ser- vice department. 2.6 Personnel qualification...
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Technical Service department. This ensures that all work is per- formed correctly. If maintenance is not carried out by our Technical Service department, please ensure that the personnel who carry out the mainte- nance are trained and authorized by Maschinenfabrik Reinhausen GmbH to carry out the work. Authorized personnel Authorized personnel are trained by Maschinenfabrik Reinhausen GmbH to carry out special maintenance.
Hard hat To protect against falling and flying parts and materials. Hearing protection To protect against hearing damage. Protective gloves To protect against mechanical, thermal, and electrical hazards. Table 9: Personal protective equipment ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
A motor-drive unit which receives a control impulse (e.g. from a voltage reg- ulator) changes the operating position of the on-load tap-changer, as a result of which the transformer's transmission ratio is adapted to the prevailing op- erating requirements. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
(also available with change-over selector on request). The design and designation of the most important on-load tap-changer com- ponents are shown in the installation drawings in the appendix. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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For the number of maximum operating positions of the on-load tap-changer, refer to the technical data. Figure 4: VACUTAP® VM 1 On-load tap-changer head 3 Selector 2 Oil compartment 4 Change-over selector ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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Figure 5: VACUTAP® VM 300 1 On-load tap-changer head 3 Change-over selector 2 Oil compartment 4 Selector 3.2.2.1 Pipe connections The on-load tap-changer head features 4 pipe connections for different pur- poses. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
The nameplate with serial number is on the on-load tap-changer head cover. Figure 7: Nameplate The serial number can also be found on the selector. Figure 8: Serial number 3.2.4 Protective devices The on-load tap-changer is equipped with the following protective devices. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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It is not necessary to bleed the protective relay when filling the transformer with insulating fluid. Gas accumulation in the protective relay is normal. 3.2.4.1.2 Setup/versions Front view Figure 9: RS 2001-Ex 1 Inspection window 2 Pressure equalization element ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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5 OPERATION (reset) test button 6 Slotted head screw for protective cover 7 OFF (test tripping) test button 8 Protective conductor connection 9 Protective cover 10 Dummy plug 11 Connection terminal ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
The bevel gear changes the direction from vertical to horizontal. Accordingly, the vertical drive shaft has to be mounted between the drive and bevel gear, and the horizontal drive shaft between the bevel gear and on-load tap-changer or de-energized tap-changer. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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Figure 13: Explosion-proof drive shaft with insulator ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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(maximum permissible 2472 mm is exceeded, the axial offset 2°) use of an intermediate bearing is necessary. V 1 ≤ 2472 mm (without in- termediate bearing) V 1 > 2472 mm (with inter- mediate bearing) ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
3 Product description 3.3.3 Identification plate The identification plate is on the telescopic protective tube. Figure 15: Position of the identification plate ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
► Use insulating fluids that meet the requirements in accordance with IEC 60296. ► If approved by the transformer manufacturer, you can use synthetic es- ters in accordance with IEC 61099 or natural esters in accordance with IEC 62770 approved by Maschinenfabrik Reinhausen GmbH. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN...
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Figure 17: Pipe connections S and R 3. Take an insulating fluid sample from the oil compartment. 4. Record the temperature of the sample immediately after the sample is taken. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
► Ensure that the selector / de-energized tap changer is fully immersed in insulating fluid and that the oil compartment of the on-load tap-changer is completely filled with insulating fluid. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
4. Open terminal box of protective relay. 5. Press OFF test button. 6. Leave the transformer's danger zone. 7. Ensure that the transformer's circuit breaker cannot be closed. ð Passive protection test ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
Only perform tap-change op- erations - whether under no load or under load conditions - once the in- rush current impulse has subsided. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
An operation is considered an emergency operation if a tap-change opera- tion is absolutely necessary when a transformer is energized, despite a fault in the motor-drive unit. In this case, be sure to observe the warnings listed above. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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6. Switch on motor protective switch Q1 (position I). 7. Close the door of the protective housing for the motor-drive unit. DANGER! Risk of explosion! Pre-flush the motor-drive unit and check the leakage loss rate. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
MR repre- sentative, the transformer manufacturer or contact MR directly. Maschinenfabrik Reinhausen GmbH Technical Service Postfach 12 03 60 ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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Contact manufacturer of transformer and, if necessary, MR, and provide measured values. Deviation from limit value for insulating fluids Carry out insulating fluid change, check oil conservator breather of on-load tap-changer. Table 10: Fault elimination ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
Danger of severe injury or death if on-load tap-changer and transformer are insufficiently tested. ► Be sure to contact Maschinenfabrik Reinhausen to check on-load tap- changer and transformer if the protective relay has tripped. ► Only use the equipment again when you are sure there is no damage to the on-load tap-changer or transformer.
If the flap valve is in the OFF position, proceed as follows: 1. Ensure that the transformer is not started up under any circumstances. 2. Contact and inform Maschinenfabrik Reinhausen of the following: ð Serial number of protective relay and on-load tap-changer ð...
► In the event of operation interruptions of more than 2 weeks, connect and operate the anti-condensation heater in the motor-drive unit. If this is not possible, e.g. during transportation, place a sufficient amount of desiccant in the protective housing. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
Check correct functioning of the installed electrical heater in the protective housing of the motor-drive unit. Annually Check correct function of protective relay. Annually Check perfect condition of the silica gel breather for the on- load tap-changer oil conservator. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
If pending maintenance work is not carried out immediately, this may lead to death or serious injury as a result of a progressive short circuit, for example. ► Adherence to the following maintenance intervals is mandatory. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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Table 12: Maintenance plan without MR monitoring system A label on the inside of the door of the TAPMOTION® ED motor-drive unit also specifies the relevant maintenance interval. Figure 21: Label showing maintenance intervals ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
If pending maintenance work is not carried out immediately, this may lead to death or serious injury as a result of a progressive short circuit, for example. ► Contact the Maschinenfabrik Reinhausen GmbH Technical Service de- partment as soon as the MR monitoring system issues a maintenance warning.
3. Use a screwdriver to lift the valve tappet on air-vent valve E1. ð The gas under the on-load tap-changer head cover escapes. When do- ing so, ensure sufficient ventilation. ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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10. Open the stop-cock between oil conservator and on-load tap-changer. ð The insulating fluid flows out of the oil conservator into the oil com- partment. 11. Extract insulating fluid via pipe connection S. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
3. Position the on-load tap-changer head cover on the on-load tap-changer head in such a way that the red triangular markings on the on-load tap- changer head and the on-load tap-changer head cover are aligned. Figure 27: Triangular markings and o-ring ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
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12. Check the level in the oil conservator and top up with insulating fluid if necessary. 13. Re-vent the on-load tap-changer head via air-vent valve E1 and the pipe connection S via the vent screw. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
1. Secure horizontal drive shaft between upper gear unit and bevel gear with coupling brackets and 4 or 6 screws. Refer to the drive shaft operating in- structions for details. Figure 30: Securing drive shaft ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
7.4 Performing DC resistance measurement on transformer The measured DC current is normally restricted to 10% of the rated current of the measured transformer winding in order to prevent the winding from overheating. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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Oil compartment empty Maximum 10 A DC Maximum 50 A DC Oil compartment filled with Maximum 50 A DC Maximum 50 A DC insulating fluid Table 13: Maximum permitted measured currents when performing DC resistance measurement on transformer ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
Tripping circuit The protective relay can be supplied with two independent dry-reed mag- netic switches. These can be designed as normally open (NO) or normally closed (NC) contacts (see dimensional drawing supplied). ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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Switching capacity (switching load on an off) Minimum switched current AC/DC (low- 50 mA (at 24 V) est voltage) Minimum switched current AC/DC (high- 4.8 mA (at 250 V) est voltage) ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
These can be designed as normally open (NO) or normally closed (NC) contacts and are electrically isolated (see dimensional drawing supplied). Electrical data for normally open (NO) and normally closed (NC) dry-reed magnetic switch ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
> 60 kV/2.5 mm ≤ 100 ppm the first time During operation > 30 kV/2.5 mm ≤ 400 ppm After maintenance > 50 kV/2.5 mm ≤ 150 ppm Table 24: Synthetic esters in accordance with IEC 61099 ® Maschinenfabrik Reinhausen GmbH 2020 5293069/01 EN VACUTAP VM-Ex...
9 Drawings 9.4 Special design for bell-type tank installation for Um up to 300 kV (896762) ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
9 Drawings 9.6 On-load tap-changer head with tap-change supervisory control (894109) ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
(arc) Normally Closed contact The International Electrotechnical Commission (IEC for short) is involved in the preparation and Normally Open contact publication of international standards for electri- cal, electronic and related technologies. ® VACUTAP VM-Ex 5293069/01 EN Maschinenfabrik Reinhausen GmbH 2020...
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